Ventilation - Eggs Candling 2. Description - Fiem MG 140/200 RURALE Manual De Uso

VENTILATION: Ref. MG140/200 - The incubator is supplied with two air intakes positioned on both sides of the unit and one exhaust
hole positioned on the upper panel for carbon dioxide expulsion. For the control of ventilation, the incubator is supplied with a fan
speed regulator which should be switched to maximum position during the incubation period see instructions of the LCD Control
Panel. The ventilation speed will be easily manageable on the incubator model MG 140/200 featured by LCD control simply
acting on the main control panel, pressing the dedicated button. When batch hatching, the fan speed should not be decreased
for the hatching period, in order not to damage the eggs which are in incubation phase. During the incubation period, it is necessary
to ensure the optimum oxygenation level, which will vary according to the number of eggs loaded. The correct ventilation for a full
load of eggs will, necessarily, be too much for only a partial load of eggs. The level of oxygenation can be controlled by adjusting the
diameter of the ventilation control placed on the left panel of the incubator.
Ref. Mod. MG 200/300 and MG320 MAXI PRO - The incubator is supplied with an air intake and an exhaust hole for carbon dioxide
expulsion, both positioned on the upper panel. "This model is equipped with electronic fan motor without speed fan regulation".
ATTENTION: Never completely close the ventilation control because it would change all the values of temperature/humidity
and aeration, thus compromising the incubation results.
EGG-CANDLING
At 8th - 10th day of incubation, it is advisable to candle the eggs in order to eliminate those which are infertile; this operation must be
done in a dark room. By observing the inside of a developing, fertile egg, using a suitable candling lamp, it is possible to determine
the embryo development which looks like a small reddish shape, composed of the heart and small arteries which are radiating from it
(Fig. b). If the egg is moved lightly, it is possible to see clearly the rhythmic oscillations of the embryo. On the contrary, an infertile egg
appears completely transparent (clear), with a slight darkening where the yolk is. (a). If during the candling operation, you find some
eggs with a reddish spot stuck or attached to the shell, or a central spot surrounded by one or more concentric hoops, or something
nebulous crossing the inside; then in this case, the embryos are either false or dead, and must be taken out of the incubator to prevent
them contaminating other eggs with bacteria by infection or explosion
Periodic candling during embryonic development is necessa-
ry to ensure the best hatching results. Using a good candling
lamp, it is possible to check the growth of the air-space.
The pictures shown herewith show the air-space growth as
related to hen, turkey, and pheasant eggs. If the air space
measurements appear similar to those shown in the picture,
it means that the embryo is developing correctly, and that the
amount of humidity supplied in the machine is right. If the air
space is not developing correctly,it means that it is necessary
to change the level of humidity supplied to the machine.
2. DESCRIPTION
1: LCD control unit or MinilLCD unit;
2: Reading thermometer (°F);
3: Wet bulb hygrometer (°F);
4: Plastic window;
5: Metal setting trays;
6: no. 4 plastic hatching baskets
with 1 cover ref. mod. MG320 Maxi Pro;
6: no. 1 metal hatching basket
ref. MG140/200 Rural;
6: no.1 plastic hatching basket with 1 cover
ref. MG200/300 Super Rural;
7: Holes for exit air with regulation shutter;
8: Dislocation for water basin;
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It must be noted that in case the air-chamber shrinkage is major than the details reported into the table, i
t will be necessary to increase the humidity value; contrariarly if it results smaller, it will be necessary to decrease the humidity value.
a) Infertile egg
b) Egg with normally developing embryo
c) Egg with dead embryo at 5th - 6th day of incubation
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MG320 MAXI PRO
MG140/200 RURAL MG200/300 S.RURAL
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